NGC 840
| Galaxy NGC 840 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 10 m 16.2 s |
| declination | + 07 ° 50 ′ 43 ″ |
| Appearance | |
| Morphological type | SB (r) b |
| Brightness (visual) | 13.5 likes |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1.8 ′ × 1 ′ |
| Position angle | 73 ° |
| Surface brightness | 14.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.024250 ± 0.000017 |
| Radial velocity | 7270 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(327 ± 23) x 10 6 ly (100.3 ± 7.0) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | September 2, 1864 |
| Catalog names | |
| NGC 840 • UGC 1664 • PGC 8293 • CGCG 413-053 • MCG + 01-06-049 • 2MASX J02101623 + 0750432 • NPM1G +07.0065 | |
NGC 840 is a barred spiral galaxy of the Hubble type SBb in the constellation Whale south of the ecliptic . It is estimated to be 327 million light years away from the Milky Way and has a diameter of around 175,000 ly.
In the same area of the sky is the galaxy NGC 827 .
The object was on 2 September 1864 by the astronomer Albert Marth use on a 48-inch - telescope discovered.
Web links
Commons : NGC 840 - collection of images, videos, and audio files
